أرسل هذا في رسالة قصيرة: Single bacteria spore encapsulation through layer-by-layer self-assembly of poly(dimethyldiallyl ammonium chloride) and silica nanoparticles for self-healing concrete

  ____      _____    _    _     ______   _    _   
 |  _ \\   |  ___|| | |  | ||  /_   _// | |  | || 
 | |_| ||  | ||__   | |/\| ||   -| ||-  | |/\| || 
 | .  //   | ||__   |  /\  ||   _| ||_  |  /\  || 
 |_|\_\\   |_____|| |_// \_||  /_____// |_// \_|| 
 `-` --`   `-----`  `-`   `-`  `-----`  `-`   `-`